Janome MB-4S Manual

The Janome MB-4S is a professional-grade 4-needle embroidery machine designed for commercial and industrial use. It features advanced embroidery capabilities, large embroidery area, automatic thread trimming, color change system, USB connectivity, LCD touch screen display, built-in designs, and compatibility with various file formats. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 4-needle embroidery system, LCD touch screen, USB port, automatic thread trimmer, bobbin winding system, embroidery frame holder, foot pedal control.

Feature	Description
Needle System	4-needle automatic color change
Embroidery Area	Large 360mm x 200mm maximum
LCD Display	7-inch color touch screen
USB Port	For design file transfer
Automatic Thread Trimmer	Cuts top and bobbin threads automatically
Stitch Speed	Up to 850 stitches per minute
Built-in Designs	Pre-loaded embroidery patterns
Memory Capacity	Internal storage for custom designs
Thread Tension	Automatic and manual adjustment
Power Requirements	110-120V AC, 60Hz

Installation

Unpack and inspect contents. Place on stable work surface.

1. Assemble machine head: Attach to stand according to diagram.
2. Install needles: Use proper needle type and orientation.
3. Connect power: Plug into grounded electrical outlet.
4. Attach embroidery frame: Secure frame holder assembly.
5. Thread machine: Follow threading path diagram.

WARNING! Machine is heavy; use proper lifting techniques. Ensure stable surface to prevent tipping.

First-Time Setup

Power on machine; follow on-screen initialization.

1. Language selection: Choose preferred language from setup menu.
2. Date and time: Set current date and time for file management.
3. Needle calibration: Perform automatic needle position calibration.
4. Thread tension: Set initial thread tension settings.
5. Test embroidery: Run built-in test design to verify operation.

CAUTION! Keep hands clear of moving parts during calibration and testing.

Specifications

• Machine Type: 4-needle commercial embroidery
• Embroidery Area: 360mm x 200mm maximum
• Stitch Speed: Up to 850 SPM
• Needle System: DBx1 #11/75 needles standard
• Display: 7-inch color LCD touch screen
• Memory: Internal storage with USB expansion
• File Formats: DST, EXP, JEF, PES, VIP
• Thread Trimming: Automatic top and bobbin
• Power Source: 110-120V AC, 60Hz
• Dimensions: 850mm W x 650mm D x 1050mm H
• Weight: Approximately 85 kg

Controls and Settings

Access functions via touch screen or physical controls. Front Panel: POWER, START/STOP, NEEDLE UP/DOWN, THREAD TRIMMER.

Touch Screen: Design selection, editing, positioning, color sequence, stitch settings, file management.

Embroidery Settings: Design size adjustment, rotation, mirroring, density control, underlay settings. Machine Settings: Speed control, thread tension, needle heating, automatic functions. File Management: USB import/export, design organization, memory management.

Connecting Devices

USB: For design transfer and software updates. Network: Optional Ethernet connection for multi-machine operation.

1. Turn off machine before connecting devices.
2. Insert USB drive into designated port.
3. Access files through file management menu.
4. For network: Connect Ethernet cable and configure network settings.

Tip: Use recommended USB drives for reliable file transfer.

Embroidery Operation

Supports various file formats including DST, EXP, JEF, PES.

1. Load design: Insert USB or select from internal memory.
2. Position design: Use touch screen to move and rotate design.
3. Set colors: Program automatic color change sequence.
4. Start embroidery: Press START or use foot pedal.
5. Monitor progress: Watch stitch counter and time remaining.
6. Color changes: Machine stops automatically for thread changes.
7. Pause/stop: Use STOP button to halt operation.
8. Finish: Machine trims threads automatically at completion.

WARNING! Keep hands away from moving needle area during operation.

Maintenance Features

Automatic Maintenance: Built-in cleaning reminders and lubrication alerts. Manual Maintenance: Needle replacement, bobbin case cleaning, hook area maintenance.

Care & Cleaning

Unplug before cleaning. Use compressed air for dust removal. Wipe surfaces with dry cloth.

CAUTION! Do not use liquids near electrical components. Regular oiling required as per maintenance schedule.

Regulatory Information

CE Certified: Complies with European safety standards. UL Listed: Meets North American electrical safety requirements. Copyright © 2024 Janome; trademarks of Janome Sewing Machine Co., Ltd. For technical support, visit www.janome.com or contact authorized service centers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Thread breaks frequently	Tension/needle issues	Check thread tension; replace needle; verify threading path.
Design misalignment	Frame/hooping issues	Re-hoop fabric securely; check frame mounting.
Machine won't start	Safety sensors/power	Check cover closure; verify power connection; reset machine.
Poor stitch quality	Tension/timing issues	Adjust thread tension; check hook timing; clean race area.
USB not recognized	Drive format/compatibility	Use FAT32 format; try different USB drive; check port connection.

Reset: Menu > System > Factory Reset if available.

Service: Contact authorized Janome service center; www.janome.com